I think Search 5.0 is inevitable. It's the thing that we have aspired for technology since computers began to appear in fiction. It is excellent for the convenience of the user although it does give rise to questions about whether the increasing convenience of obtaining information will have long term negative effects on cognitive functions in adult and cognitive development in children.

As a matter of intellectual property rights it will be interesting to see how Google scraping content from other websites will become a legal issue for Google where it is not properly citing its resources. At some point the SEO goal may shift away from making Google find links to love your content to hiding your content from Google but making it love to link to you.